EP1940574A1 - Verfahren zur herstellung eines penetrators - Google Patents
Verfahren zur herstellung eines penetratorsInfo
- Publication number
- EP1940574A1 EP1940574A1 EP06792334A EP06792334A EP1940574A1 EP 1940574 A1 EP1940574 A1 EP 1940574A1 EP 06792334 A EP06792334 A EP 06792334A EP 06792334 A EP06792334 A EP 06792334A EP 1940574 A1 EP1940574 A1 EP 1940574A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tungsten
- penetrator
- powder mixture
- core
- powder blend
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
- F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
- F42B12/04—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type
- F42B12/06—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type with hard or heavy core; Kinetic energy penetrators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/004—Filling molds with powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
- F42B12/72—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
- F42B12/74—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the core or solid body
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
- F42B12/72—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
- F42B12/76—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the casing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
Definitions
- the invention relates to a method for producing a penetrator with a tungsten heavy metal (WSM) penetrator core with a high proportion of tungsten and an outer jacket which consists of a material which is more ductile than the penetrator core.
- WSM tungsten heavy metal
- Tungsten-heavy metal alloy penetrators typically have a high tungsten content (90 to about 97% by weight), because of their high masses, these materials have good penetration performance on normal impact on simple armored targets.
- the high proportion of tungsten leads to embrittlement of the material, so that it often comes before the penetration of the target to a breakup of the penetrator with obliquely arranged targets and multi-plate targets.
- the kinetic energy of the resulting relatively short fragments is usually insufficient due to their low mass to penetrate the remaining target plate (s).
- the brittleness of well-known WSM penetrators is often increased by the fact that in the mechanical processing, for example by turning or grinding, cracks of the near-surface tungsten grains occur, which then can lead to premature failure of the respective penetrator in the load case by crack propagation.
- the invention has for its object to provide a comparison with other known methods simpler method for producing a penetrator with brittle penetrator core and ductile jacket.
- the invention is essentially based on the idea of concentrically introducing in a mold adapted to the outer dimensions of the penetrator a double hopper filling device adapted to the dimensions of the penetrator core. While in the inner tube, a first tungsten-containing powder mixture with high tungsten content (90- 99 wt.%) Is filled for the preparation of the penetrator core, in the annular space located between the outer wall of the inner tube and the inner wall of the mold, a second tungsten-containing powder mixture with respect to first powder mixture lower tungsten content (approximately between 83% and 91%) introduced. After removal of the inner tube from the mold then takes place in a conventional manner required for the preparation of the penetrator pressing the powder mixture, the sintering, the cold forming of the compact and finally the finishing of the pen- netrator blank.
- a penetrator is produced with a core of high density and a tough outer sheath frictionally connected to the penetrator core, wherein the outer sheath prevents breakage on oblique target collision.
- the first tungsten-containing powder mixture has proven to be a mixture with 95% by weight of tungsten and a balance of nickel and cobalt powder in a weight ratio of 9: 1.
- a mixture of 87 wt .-% tungsten and a balance of nickel and cobalt powder, also in a weight ratio of 9: 1 resulted as the second tungsten-containing powder mixture in an advantageous manner.
- FIG. 1 shows a longitudinal section through a mold for producing a Penetratorrohlings containing therein powder mixtures
- FIG. 2 shows a longitudinal section of a part of the penetrator produced by the process according to the invention.
- FIG. 1 designates a plastic mold adapted to the outer dimensions of the compact to be produced, in which a double hopper filling device is concentrically inserted.
- the inner tube 3 and the double funnel 2 are preferably made of stainless steel and have a wall thickness of about 1 mm.
- the annular space located between the die 1 and the inner tube 3 has a wall distance of about 1/8 of the inner diameter.
- Both concentric funnels are connected in the conical area by means of transverse struts.
- a first tungsten-containing powder mixture 4 is introduced with a tungsten content of 95 wt .-% and a balance of nickel and cobalt powder in a weight ratio of 9: 1.
- a second tungsten-containing powder mixture 5 having a tungsten content of 87% by weight and likewise a balance of nickel and cobalt powder in a weight ratio of 9: 1 is introduced into the annular space.
- the double hopper filling device is removed from the pressmatrix 1 and then the entire powder mixture is hydrostatically compressed after pre-compaction caused, for example, by shaking. Subsequently, the pressing is then performed according to the desired specifications of the finished sintered in a conventional manner, heat-treated, cold-formed, hot outsourced and then finished by a machining process, as known for example from US 3,979,234.
- FIG. 2 shows the longitudinal section of a part of the penetrator 10 produced by the process according to the invention.
- the penetrator core which is relatively brittle due to the high proportion of tungsten
- 7 the outer shell which is significantly more ductile due to the lower tungsten content, are designated as threaded.
- a transition region 8 with a preferred thickness between 25 ⁇ m and 200 ⁇ m, which ensures good adhesion between the core 6 and the jacket 7.
- the tough shell 7 is preferably removed in the tip-side region, for example by machining, so that it is made of a core material tip and breaks brittle in the target impact, whereby ever sharp Anb formulatekanten arise that ensure a good Anb bracket .
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL06792334T PL1940574T3 (pl) | 2005-10-18 | 2006-09-30 | Sposób wytwarzania penetratora |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005049748A DE102005049748A1 (de) | 2005-10-18 | 2005-10-18 | Verfahren zur Herstellung eines Penetrators |
| PCT/EP2006/009509 WO2007045342A1 (de) | 2005-10-18 | 2006-09-30 | Verfahren zur herstellung eines penetrators |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1940574A1 true EP1940574A1 (de) | 2008-07-09 |
| EP1940574B1 EP1940574B1 (de) | 2012-06-06 |
Family
ID=37433842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06792334A Active EP1940574B1 (de) | 2005-10-18 | 2006-09-30 | Verfahren zur herstellung eines penetrators |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8580188B2 (de) |
| EP (1) | EP1940574B1 (de) |
| DE (1) | DE102005049748A1 (de) |
| PL (1) | PL1940574T3 (de) |
| WO (1) | WO2007045342A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017013314A1 (fr) | 2015-07-22 | 2017-01-26 | Cime Bocuze | Penetrateur comportant un cœur entoure d'une gaine ductile et procede de fabrication d'un tel penetrateur |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007037702A1 (de) | 2007-08-09 | 2009-02-12 | Rheinmetall Waffe Munition Gmbh | Verfahren und Vorrichtung zur Herstellung eines rohrförmigen Festkörpers aus einer hochschmelzenden Wolfram-Schwermetalllegierung, insbesondere als Halbzeug für die Fertigung eines Penetrators für ein Wuchtgeschoss mit Splitterwirkung |
| RU2361697C2 (ru) * | 2007-09-14 | 2009-07-20 | Общество с ограниченной ответственностью Торговый дом "Абразивные заводы Урала" | Способ получения вольфрамовых заготовок |
| JP6682601B2 (ja) * | 2018-10-31 | 2020-04-15 | Ntn株式会社 | 圧粉体の成形方法および焼結軸受の製造方法 |
| CN109795096A (zh) * | 2018-12-27 | 2019-05-24 | 中山伟强科技有限公司 | 一种导热装置封口方法 |
| CN114147233B (zh) * | 2022-02-10 | 2022-04-12 | 北京煜鼎增材制造研究院有限公司 | 一种导弹战斗部壳体及其增材制造方法 |
| CN115625337B (zh) * | 2022-12-06 | 2024-07-09 | 成都虹波实业股份有限公司 | 一种钨合金复合材料及制备方法 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2552090A (en) * | 1945-05-04 | 1951-05-08 | Stupakoff Ceramic & Mfg Compan | Method and apparatus for molding ceramic articles |
| DE2460013C3 (de) * | 1974-12-19 | 1978-08-24 | Sintermetallwerk Krebsoege Gmbh, 5608 Radevormwald | Verfahren zum Herstellen metallischer Formkörper |
| US3979234A (en) | 1975-09-18 | 1976-09-07 | The United States Of America As Represented By The United States Energy Research And Development Administration | Process for fabricating articles of tungsten-nickel-iron alloy |
| AT383979B (de) * | 1985-10-31 | 1987-09-10 | Voest Alpine Ag | Verfahren zur herstellung von penetratoren fuer unterkalibrige wuchtgeschosse sowie huelle zur verwendung bei der durchfuehrung dieses verfahrens |
| DE3821474C1 (de) | 1988-06-25 | 1998-08-27 | Nwm De Kruithoorn Bv | Unterkalibriges, drallstabilisiertes Mehrzweckgeschoß |
| DE4016051C2 (de) | 1990-05-18 | 1994-10-06 | Rheinmetall Gmbh | Mantelpenetrator |
| US5064462A (en) | 1990-10-19 | 1991-11-12 | Gte Products Corporation | Tungsten penetrator |
| DE4113177C2 (de) | 1991-04-23 | 1993-10-21 | Nwm De Kruithoorn Bv | Verfahren zur Herstellung eines Penetrators |
| DE4318827C2 (de) * | 1993-06-07 | 1996-08-08 | Nwm De Kruithoorn Bv | Schwermetallegierung und Verfahren zu ihrer Herstellung |
| US5821441A (en) * | 1993-10-08 | 1998-10-13 | Sumitomo Electric Industries, Ltd. | Tough and corrosion-resistant tungsten based sintered alloy and method of preparing the same |
| DK1007898T3 (da) * | 1997-08-26 | 2001-10-01 | Ruag Munition | Kappeprojektil med hård kerne |
| ATE285482T1 (de) * | 1999-07-13 | 2005-01-15 | Gen Atomics | Einkristall aus wolframlegierung für penetrator und herstellungsverfahren dafür |
| US7059233B2 (en) * | 2002-10-31 | 2006-06-13 | Amick Darryl D | Tungsten-containing articles and methods for forming the same |
-
2005
- 2005-10-18 DE DE102005049748A patent/DE102005049748A1/de not_active Withdrawn
-
2006
- 2006-09-30 EP EP06792334A patent/EP1940574B1/de active Active
- 2006-09-30 PL PL06792334T patent/PL1940574T3/pl unknown
- 2006-09-30 US US12/083,671 patent/US8580188B2/en active Active
- 2006-09-30 WO PCT/EP2006/009509 patent/WO2007045342A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007045342A1 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017013314A1 (fr) | 2015-07-22 | 2017-01-26 | Cime Bocuze | Penetrateur comportant un cœur entoure d'une gaine ductile et procede de fabrication d'un tel penetrateur |
| FR3039266A1 (fr) * | 2015-07-22 | 2017-01-27 | Cime Bocuze | Penetrateur comportant un coeur entoure d'une gaine ductile et procede de fabrication d'un tel penetrateur |
Also Published As
| Publication number | Publication date |
|---|---|
| US20090169411A1 (en) | 2009-07-02 |
| WO2007045342A1 (de) | 2007-04-26 |
| EP1940574B1 (de) | 2012-06-06 |
| PL1940574T3 (pl) | 2012-11-30 |
| US8580188B2 (en) | 2013-11-12 |
| DE102005049748A1 (de) | 2007-04-19 |
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